In this diagram http://www.seymourduncan.com/images/sup ... le_4ws.jpg it says I need to disconnect the neck pup cover from the pups ground and install a separate ground. What is this? Do I need to cut the small solder bridge on the underside of the pup - this?

overall it looks quite ugly. What is the trick that makes ground wires stick better on the pots? Should I have sanded the pot surface before?
